68704650 has 144 divisors (see below), whose sum is σ = 223539264. Its totient is φ = 14768640.

The previous prime is 68704639. The next prime is 68704651. The reversal of 68704650 is 5640786.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68704651) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 52909 + ... + 54191.

It is an arithmetic number, because the mean of its divisors is an integer number (1552356).

Almost surely, 2^68704650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68704650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111769632).

68704650 is an abundant number, since it is smaller than the sum of its proper divisors (154834614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68704650 is a wasteful number, since it uses less digits than its factorization.

68704650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325 (or 1317 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 68704650 is about 8288.8268168662. The cubic root of 68704650 is about 409.5705398034.

The spelling of 68704650 in words is "sixty-eight million, seven hundred four thousand, six hundred fifty".